EP 3541007 B1 20230906 - CRYPTOGRAPHIC COMMUNICATION APPARATUS, CRYPTOGRAPHIC COMMUNICATION SYSTEM, CRYPTOGRAPHIC COMMUNICATION METHOD AND COMPUTER-READABLE MEDIUM
Title (en)
CRYPTOGRAPHIC COMMUNICATION APPARATUS, CRYPTOGRAPHIC COMMUNICATION SYSTEM, CRYPTOGRAPHIC COMMUNICATION METHOD AND COMPUTER-READABLE MEDIUM
Title (de)
VORRICHTUNG ZUR KRYPTOGRAPHISCHEN KOMMUNIKATION, SYSTEM ZUR KRYPTOGRAFISCHEN KOMMUNIKATION, VERFAHREN ZUR KRYPTOGRAFISCHEN KOMMUNIKATION UND COMPUTERLESBARES MEDIUM
Title (fr)
APPAREIL, SYSTÈME ET PROCÉDÉ DE COMMUNICATION CRYPTOGRAPHIQUE ET SUPPORT LISIBLE SUR ORDINATEUR
Publication
Application
Priority
JP 2018048491 A 20180315
Abstract (en)
[origin: EP3541007A1] A cryptographic communication apparatus according to an arrangement includes an encryption part (52), a decryption part (53), and a control unit (3). The encryption part (52) prefetches an encryption key for encrypting plaintext data before receiving the plaintext data and, when receiving the plaintext data, encrypts the plaintext data using the encryption key. The decryption part (53) prefetches a decryption key for decrypting cipher text data before receiving the cipher text data and, when receiving the cipher text data, decrypts the cipher text data using the decryption key. The control unit (3) controls a volume of the encryption key to be prefetched and a volume of the decryption key to be prefetched.
IPC 8 full level
CPC (source: EP)
H04L 9/0656 (2013.01); H04L 9/0852 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3541007 A1 20190918; EP 3541007 B1 20230906; JP 2019161557 A 20190919; JP 2022172360 A 20221115; JP 7419463 B2 20240122
DOCDB simple family (application)
EP 18192267 A 20180903; JP 2018048491 A 20180315; JP 2022144400 A 20220912